1) Plastic film covered wheat
地膜覆盖小麦
2) field-covered wheat
覆膜小麦
1.
The comparative observation between field-covered wheat and field-uncovered wheat on dry matter accumulation after bloom distribition.
结果表明 :覆膜小麦和露地小麦比较 ,具有较高的生物产量 ,开花后干物质积累量、日生产量、茎、叶、颖壳、穗轴等器官营养物质输出率、分配率、转换率均高于露地栽培小麦。
3) wheat coverage
小麦覆盖度
1.
The relationship between bare soil s back scattering coefficient and soil water content or land surface roughness was analyzed,and the relationship between winter wheat field s backscattering coefficient and soil water content or wheat coverage was also analyzed.
2左右)冬小麦麦地的后向散射与土壤含水量、地表粗糙度及小麦覆盖度之间的关系,探讨了裸土和冬小麦麦地土壤含水量及小麦覆盖度的反演方法。
4) plastic film mulching
地膜覆盖
1.
Analysis of adverse effects on maize yield decrease resulted from plastic film mulching in dryland;
地膜覆盖导致旱地玉米减产的负面影响
2.
The benefit and prospect for reuse of plastic film mulching and no-tillage technique in the semiarid region of Gansu Province;
甘肃半干旱区地膜覆盖再利用免耕技术效应与前景分析
3.
Studies on effects of plastic film mulching on soil environment of maize field;
玉米地膜覆盖的土壤环境效应
5) film mulching
地膜覆盖
1.
Study on the effect of film mulching techniques of flue-cured tobacco on the yield and quality of flue-cured tobacco;
烤烟地膜覆盖对烟叶产量及品质的影响
2.
Effects of straw mulching and film mulching on flue-cured tobacco growth and quality;
稻草覆盖和地膜覆盖对烤烟生长发育及品质的影响
3.
A field experiment was carried out on typical Ust-Sandiic Entisols soil in semi-arid area to study the effect of film mulching,nitrogen(N) application and supplementary irrigation on spring maize(Zea mays L.
以典型半干旱区干湿砂质新成土(Ust-Sandic Entisols)为供试土壤进行田间试验,研究地膜覆盖、施氮及补充灌水量对春玉米(Zea maysL。
6) plastic film mulch
地膜覆盖
1.
Effects of plastic film mulching and pre-sowing irrigation on yield formation of spring wheat;
地膜覆盖和底墒灌溉对春小麦产量形成的影响
2.
The study concerned about four cultivation modules(no mulch,straw mulch,plastic film mulch and furrow planting),three nitrogen fertilizer levels(0,120 and 240 kg N/hm2) and two wheat densities(seed rate of 180 and 225 kg/hm2).
59 kg/hm2,且主要积累在80-160 cm土层,土壤氮库不仅明显,且残留比前3年土壤剖面显著下移(前3年主要累积在100 cm),差异达显著和极显著水平;不同栽培模式和种植密度0-200 cm土层硝态氮残留累积规律及其小麦籽粒吸氮量基本相似,排序均为:地膜覆盖>常规种植>秸秆覆盖>垄沟种植;随施氮量的增加土壤硝态氮残留量也相应增加,N0处理0-200 cm土壤平均硝态氮残留量为57。
3.
According to experiment results from 2004 to 2005 in Zhangye city of Gansu province,to study the effects of plastic film mulching(including well watered treatment F(FM),light and medium water deficit treatment L(FM),M(FM)),and bare field(including well watered treatment F(B) and medium water deficit treatment M(B)).
借助于国家高科技农业“863”课题,以春小麦为供试作物,2004年和2005年在甘肃省张掖市甘州区进行了膜上灌春小麦调亏灌大田试验研究,研究了地膜覆盖(设丰水F(FM)、轻度L(FM)和中度M(FM))、露地(设丰水F(B)和中度M(B))。
补充资料：地膜覆盖(plastic membrane mulching)
地膜覆盖(plastic membrane mulching)
用塑料薄膜覆盖地面的一种栽培措施。一般采用厚度为0.015mm左右的高压聚乙烯透明塑料微薄膜，有透光性好、导热性差、不透气，在低温易冻、热量不足条件下，可起增温、保墒、改善近地面气层的光热条件，促进土壤微生物活动，改善土壤理化性质，提高CO2浓度等作用。东北、华北和西北等地区，在棉花、花生、烟草、水稻、小麦、玉米、甘薯、马铃薯等方面获得明显的增产效果。
塑料微薄膜的种类有透明膜、黑色膜、灰色膜、黑白双重膜、铝箔膜等；有在薄膜内面涂有除草剂或杀虫剂的杀草膜或防虫膜；有按栽植作物株行距要求开好孔的有孔膜，还有厚度仅为0.008mm的低压聚乙烯微薄膜，每公顷用量仅为一般高压膜的40%左右。
覆盖方式有行间覆盖与根区覆盖，根区覆盖又可分为畦作覆盖、垄作覆盖、平作覆盖和沟作覆盖。
地膜覆盖度的计算方法，是以塑料薄膜的宽度和行距之比表示。生产上应用的覆盖度大多为50-80%。可分为两种形式：先播种后覆膜和先覆膜后打孔播种。覆盖时间，干旱少雨地区，早春整地或选墒后立即覆膜，防止土壤水分蒸发，待适温时播种，以保全苗。但春风较大的地区，不宜过早覆膜，以防大风揭膜。雨量较多或土壤水分充足的地区，可在播种前后覆膜。
覆盖时要将薄膜展开拉紧，使之紧贴地面，不得产生皱褶松弛或损坏膜面。薄膜的两侧、两头都要开沟埋入土中，边覆边埋，压紧压严。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条